Code PO452 on 2000 Mercury Grand Marquis. No vacuum leaks. Any ideas?

Asked by Jun 07, 2014 at 06:14 PM about the 2000 Mercury Grand Marquis GS

Question type: Maintenance & Repair

1 Answer

71,035

This trouble code is for the pressure sensor located on the gas tank. Usually at the fuel pump. It's a "low input" trouble code. Sounds like either the sensor is bad or the wiring going to it is bad. HTH. -Jim

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